CN105892058A - Near-to-eye display system and augmented reality device - Google Patents
Near-to-eye display system and augmented reality device Download PDFInfo
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- CN105892058A CN105892058A CN201610344148.6A CN201610344148A CN105892058A CN 105892058 A CN105892058 A CN 105892058A CN 201610344148 A CN201610344148 A CN 201610344148A CN 105892058 A CN105892058 A CN 105892058A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
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Abstract
The invention discloses a near-to-eye display system and an augmented reality device. The near-to-eye display system includes a scanning light source, a focal length lens group, a reflective and permeable plane mirror and a reflective and permeable concave mirror; scanning light outputted by the scanning light source passes through the focal length lens group, and then is reflected to the reflective and permeable concave mirror through the reflective and permeable plane mirror; the light is converged and reflected by the reflective and permeable concave mirror, and then passes through the reflective and permeable plane mirror, and thereafter is received by the eyes of a person; and external ambient light passes through the reflective and permeable plane mirror and the reflective and permeable concave mirror, and then is received by the eyes of the person. According to the near-to-eye display system provided by the embodiments of the invention, the traditional optical devices are adopted to transmit the scanning light and the external ambient light to the eyes of the person, and therefore, the accuracy of the color of a virtual image provided by the near-to-eye optical system can be ensured, and the uniformity of the brightness of the virtual image can be also ensured.
Description
Technical field
The present invention relates to augmented reality field, particularly relate to a kind of near-eye display system and augmented reality equipment.
Background technology
Augmented reality is (English: Augmented Reality；It is called for short: AR), be to utilize dummy object or letter
Breath carries out the technology of reality enhancing to real scene.Augmented reality is typically based on the first-class image acquisition of shooting
The actual physical situation image that equipment obtains, by computer system discriminatory analysis and query and search, will therewith
The extension information of the virtual generations such as content of text, picture material or the iconic model of existence association or virtual scene
Display in actual physical situation image so that user be obtained in that in the real physical environment being in true
The related expanding information such as the mark of real object, explanation, or experience real-world object in reality physical environment
Enhancing visual effect three-dimensional, that highlight.
Light is typically introduced by existing augmented reality equipment by planar waveguide technology or diffracted wave waveguide technology
In human eye, as a example by planar waveguide technology, refer to Fig. 1, Fig. 1 is prior art middle plateform guide technology
Corresponding index path, as it is shown in figure 1, each light beam is by the multiple reflections of each embedded reflecting mirror and transmission,
The brightness disproportionation of the virtual image observed at human eye 100, and owing to the spectrum of different-waveband is in waveguide
Refractive index different, reflection and the angle of transmission are different, and light transmission and reflection coefficient are different, thus
Cause the color of virtual image observed at human eye 100 uneven, and along with light transmission number of times and
The increase of order of reflection, the loss rate of light is also gradually increased, and causes the brightness of virtual image to be gradually lowered,
Greatly have impact on Consumer's Experience；And diffraction element inherently has big the lacking of dispersion in diffracted wave waveguide technology
Fall into, and diffraction efficiency is very sensitive to wavelength and the angle of incident light spectrum, thus cause observing at human eye
The color of virtual image and brightness disproportionation, also can greatly affect Consumer's Experience.
Therefore, prior art exists the color of virtual image that augmented reality equipment provides and brightness disproportionation
Technical problem, greatly have impact on the Consumer's Experience of augmented reality equipment.
Summary of the invention
It is an object of the invention to provide a kind of near-eye display system and augmented reality equipment, solve prior art
Present in the color of virtual image that provides of augmented reality equipment and the technical problem of brightness disproportionation, it is possible to for
User provides the virtual image of color and brightness uniformity.
In order to realize foregoing invention purpose, embodiment of the present invention first aspect provides a kind of nearly eye display and is
System, including: scanning light source, focal length mirror group, can instead can plane mirror and can instead can concave mirror thoroughly thoroughly；
The scanning ray of described scanning light source output after described focal length mirror group, by described can instead can turbine face
Mirror reflex to can instead can concave mirror thoroughly, through described can instead can thoroughly after concave mirror convergence reflex, then through described can
Instead can thoroughly be received by human eye after plane mirror；
External environment light sequentially pass through described can instead can thoroughly concave mirror and described can instead can quilt after plane mirror thoroughly
Human eye receives.
Alternatively, described scanning light source is arranged at above described focal length mirror group, described can instead can thoroughly set by plane mirror
Be placed in below described focal length mirror group, and described can instead can thoroughly plane mirror be positioned at described can instead can concave mirror and human eye thoroughly
Between.
Alternatively, described scanning light source includes beam providing unit and two-dimensional scan device, and described light beam provides
Unit is used for sending collimated ray, and described two-dimensional scan device is for different at two by described collimated ray
It is scanned on direction, exports described scanning ray.
Alternatively, described beam providing unit specifically includes laser generator and collimator assembly, and described laser is sent out
Raw device is used for generating laser, and described collimator assembly is for carrying out collimation process by described laser, described with output
Collimated ray.
Alternatively, described beam providing unit also includes optical fiber coupling assembly and optical fiber, described optical fiber coupling systems
Part enters described optical fiber for the laser coupled generated by described laser generator, and described optical fiber is by described laser
Launch to described collimator assembly.
Alternatively, the exit end of described optical fiber is ground to curved-surface structure.
Alternatively, described two-dimensional scan device is specially DMD, two dimension MEMS galvanometer, double single shaft MEMS
Galvanometer, EOD or liquid crystal grating.
Alternatively, described focal length mirror group includes focusing mirror group or varifocal mirror group.
Alternatively, described varifocal mirror group is specially liquid crystal lens.
Embodiment of the present invention second aspect provides a kind of augmented reality equipment, including institute as arbitrary in first aspect
The near-eye display system stated.
One or more technical scheme in the embodiment of the present invention, at least has the following technical effect that or excellent
Point:
The near-eye display system that the embodiment of the present invention provides have employed Traditional optics by scanning ray
It is transferred to human eye, owing to Traditional optics has low dispersion when transmitting image light with external environment light
Advantage, so ensure that the virtual image color that the nearly eye display optical system that the embodiment of the present invention provides provides
Color accuracy, the loss rate of the human eye of image light entrance simultaneously is identical, there is not a part for same image
The loss rate of light is relatively low and loss rate of another part light is higher and the phenomenon of brightness irregularities that occurs,
Thus ensure that the uniformity of the brightness of virtual image, it is to avoid because of the color of virtual image and brightness disproportionation and
Affect the Consumer's Experience of augmented reality equipment.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings:
Fig. 1 is the index path that prior art middle plateform guide technology is corresponding；
The structural representation of the near-eye display system that Fig. 2 provides for the embodiment of the present invention；
The structural representation of the scanning light source 201 that Fig. 3 provides for the embodiment of the present invention；
Fig. 4 A and the signal of two kinds of implementations that exit end is curved-surface structure that Fig. 4 B is optical fiber 20114
Figure.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
Embodiment of the present invention first aspect provides a kind of near-eye display system, and refer to Fig. 2, Fig. 2 is this
The structural representation of the near-eye display system that inventive embodiments provides, as in figure 2 it is shown, this near-eye display system
Including: scanning light source 201, focal length mirror group 202, can instead can plane mirror 203 and can instead can concave mirror thoroughly thoroughly
204；
The scanning ray of scanning light source 201 output is after focal length mirror group 202, by can instead can plane mirror 203 thoroughly
Reflex to can instead can concave mirror 204 thoroughly, through can instead can be thoroughly after concave mirror 204 convergence reflex, then through can be anti-
Thoroughly can be received by human eye after plane mirror 203, so, by the amphiblestroid visual persistence phenomenon of human eye, sweep
Retouch light and just can form virtual image in human eye；
External environment light sequentially pass through can instead can thoroughly concave mirror 204 and can instead can thoroughly after plane mirror 203 by people
Eye receives such that it is able to form external environment image in human eye.
It can be seen that the near-eye display system that the embodiment of the present invention provides can provide scanning light to user simultaneously
The scanning ray of source 201 output and external environment light so that the virtual image that scanning ray is formed can be folded
It is added on the external environment image that external environmental light line is formed such that it is able to provide a user with the body of augmented reality
Test.
By said structure it can be seen that the near-eye display system of embodiment of the present invention offer have employed tradition
Scanning ray and external environment light are transferred to human eye by optics, owing to Traditional optics is in transmission
Advantage during image light with low dispersion, so ensure that the nearly eye display optics that the embodiment of the present invention provides
The accuracy of the virtual image color that system provides, the loss rate of the human eye of image light entrance simultaneously is identical, no
The loss rate of a part of light that there is same image is relatively low and loss rate of another part light is higher and goes out
The phenomenon of existing brightness irregularities, thus ensure that the uniformity of the brightness of virtual image, it is to avoid because of virtual
Color and the brightness disproportionation of image and affect the Consumer's Experience of augmented reality equipment.
In the present embodiment, scanning light source 201 is arranged at above focal length mirror group 202, can instead can plane mirror thoroughly
203 are arranged at below focal length mirror group 202, and can instead can thoroughly plane mirror 203 be positioned at can instead can concave mirror and people thoroughly
Between Yan.
In the present embodiment, please continue to refer to Fig. 2, as in figure 2 it is shown, scanning light source 201 includes that light beam carries
For unit 2011 and two-dimensional scan device 2012, beam providing unit 2011 is used for sending collimated ray, and two
Dimension scanning device 2012 is for being scanned collimated ray in two different directions, and output scans light
Line.
Refer to the structural representation of the scanning light source 201 that Fig. 3, Fig. 3 provide for the embodiment of the present invention, as
Shown in Fig. 3, beam providing unit 2011 specifically includes laser generator 20111 and collimator assembly 20112,
Laser generator 20111 is used for generating laser, and collimator assembly 20112 is used for laser is carried out collimation process,
To export collimated ray.
In the present embodiment, please continue to refer to Fig. 3, laser generator 20111 specifically includes red laser and sends out
Raw unit 201111, blue laser generating unit 201112 and green laser generating unit 201113, and
First filter plate 201114 and the second filter plate 201115, the first filter plate 201114 can reflect red sharp
Light and transmitting blue laser and green laser, the second filter plate 201115 can reflection blue laser and transmission
Green laser, so, by the first filter plate 201114 and the second filter plate 201115, i.e. can be by red
Color laser generating unit 201111, blue laser generating unit 201112 and green laser generating unit 201113
The laser coupled of each self-generating is to together, meanwhile, by control respectively red laser generating unit 201111,
Blue laser generating unit 201112 and the energy of green laser generating unit 201113 output, i.e. can control
The color of the laser after system coupling.
In specific implementation process, can plate on the first filter plate 201114 and the second filter plate 201115
Upper selection silicon dioxide (chemical formula: SiO2) and tantalum pentoxide (chemical formula: Ta2O5) etc. material formed
Thin film so that the first filter plate 201114 can reflect red laser and transmitting blue laser and green and swash
Light, and the second filter plate 201115 can reflection blue laser and transmission green laser, the most superfluous at this
State.
Please continue to refer to Fig. 3, in the present embodiment, beam providing unit 2011 also includes optical fiber coupling assembly
20113 and optical fiber 20114, optical fiber coupling assembly 20113 is for the laser coupled generated by laser generator
Enter optical fiber, optical fiber 20114 by Laser emission to collimator assembly.
In specific implementation process, the exit end of optical fiber 20114 is ground to curved-surface structure, refer to Fig. 4 A
With Fig. 4 B, Fig. 4 A and two kinds of implementations that exit end is curved-surface structure that Fig. 4 B is optical fiber 20114
Schematic diagram, as shown in Figure 4 A, the exit end 201141 of optical fiber 20114 is a complete curved-surface structure,
As shown in Figure 4 B, the exit end 201141 of optical fiber 20114 adds a curved-surface structure for the frustum of a cone.
By the exit end of optical fiber 20114 is ground to curved-surface structure, the numerical aperture of outgoing beam can be expanded
Footpath, is easier to obtain broader light beam under the conditions of short-range, thus reaches two dimension in shorter distance
The width of light beam that scanning device 2012 needs, thus reduce exit end and the two-dimensional scanner of optical fiber 20114
Distance between part 2012, adds the compactness of scanning light source 201, and then decreases scanning light source
Volume shared by 201.
In specific implementation process, collimator assembly 20112 can be made up of a convex lens, it is also possible to by energy
Enough realize multiple lens composition of said function, do not limit at this.
In another embodiment, it is also possible to the laser sent by laser generator 20111 is directly injected into collimation
In assembly 20112, just repeat no more at this.
Please continue to refer to Fig. 2, in the present embodiment, two-dimensional scanner 2012 is specially DMD, two dimension
MEMS galvanometer, double single shaft MEMS galvanometer, electro-optic deflector or liquid crystal grating.
DMD is (English: Digital Micromirror Device；Chinese: digital micro-mirror device) include control
Circuit processed and multiple rotating micromirror, by sending corresponding control signal to control circuit, it becomes possible to
Control corresponding micromirror by control circuit to rotate, thus realize controlling corresponding light deflection, it is achieved sweep
The purpose retouched.
MEMS is (English: Micro-Electro-Mechanical System；Chinese: MEMS) shake
Mirror is otherwise known as MEMS scanning galvanometer, it is possible to carried out instead by the light that aforesaid scanning light source 201 exports
Penetrate, as long as the speed of MEMS vibration mirror scanning is sufficiently fast, it becomes possible to according to the visual persistence phenomenon of human eye,
Corresponding virtual image is formed in the human eye of user.
In specific implementation process, a two-dimentional MEMS galvanometer can be used, or use two one
The MEMS galvanometer combination of dimension namely double single shaft MEMS galvanometer realize, and do not limit at this.
EOD is (English: Electro Optic Deflector；It is called for short: electro-optic deflector) it is that efficiency is higher
Beam angle changes device, electrooptical material be made, can control the inclined of light under the effect of voltage
Gyration, electrooptical material can be such as niobium acid potassium crystal (chemical formula: KNbO3) or lithium columbate crystal (chemistry
Formula: LiNbO3) etc., it is, of course, also possible to produce so that folding plus quadrapole electric field on electrooptical material
Rate of penetrating produces linear change along with the voltage added, to eliminate the piezoelectric effect on common deflector, at this just
Repeat no more.
Liquid crystal grating refers to that controlling liquid crystal molecule by electric field forms grating, and by controlling in screen periods
The height of each step, namely by control incident illumination by the phase contrast before and after step, realize scanning,
Liquid crystal grating can substantially be equivalent to the notch cuttype balzed grating, of glass matrix, just repeats no more at this.
In specific implementation process, liquid crystal grating can be divided into reflection type liquid crystal grating and transmission liquid crystal light
Grid, as in figure 2 it is shown, in the present embodiment, two-dimensional scanner 2012 is specially reflection type liquid crystal grating,
In another embodiment, two-dimensional scanner 2012 can be transmission liquid crystal grating, then beam providing unit
The emitting light path of 2011 can pass transmission liquid crystal grating, just repeats no more at this.
The above-mentioned introduction concrete structure of scanning light source 201, in ensuing part, sweeps introduction
Retouch the operation logic of light source 201:
First, host computer (such as the processor of augmented reality equipment at near-eye display system place) receives and needs
After virtual image (or virtual video) to be shown, each two field picture is converted into tri-kinds of colors of RGB
Gray value data；Such as, the ceiling capacity that laser instrument is arranged is E, and the tonal gradation of each color is 8,
I.e. having 256 tonal gradations, laser energy demand corresponding to unit gray scale is E/256；
Then, when Laser Drive assembly and two-dimensional scanner 2012 receive the instruction of display virtual image,
Each laser generating unit in Laser Drive Component driver laser generator 20111 sends corresponding grade
Laser, i.e. obtains on virtual image the color of corresponding pixel after coupling, and two-dimensional scanner 2012
The light deflection the most then sent by laser generator 20111 is to corresponding angle, in like manner, for virtual graph
As upper next pixel, also aforementioned manner shows, until completing all of pixel on this two field picture
Point, a preferred scheme is, by maximum scan position or the minimum scan position of two-dimensional scanner 2012
As sweep starting point.
Two-dimensional scanner 2012 arranges position from 0 and starts scanning, and 0 is set to can be any, it is preferred that for
The maximum or minimum of mems sweep limits；Sweep speed is that v, mems drive module by current mems
Positional information passes to Laser Driven module and obtains this positional information according to the mems positional information received
The gray value of corresponding need display image pixel, and be modulation laser energy by this grayvalue transition, can adopt
Show the trichroism optical information of RGB of this display visual field successively by the method for sequential, preferential, three road GRB swash
Optical drive is according to the RGB gray value synchronous modulation rgb light source brightness of the corresponding each frame in this display visual field
Please continue to refer to Fig. 2, as in figure 2 it is shown, focal length mirror group 202 specifically can include focusing mirror group or can
Varifocal mirror group.
Focusing one or more optical lens that mirror group can include that position is fixing, this focuses the focal length of mirror group
Can not change, now namely the optimal viewing position of human eye is fixing, such as, can apply and increase at helmet-type
In strong real world devices or hat-type augmented reality equipment.
Varifocal mirror group can be with mechanical zoom mirror group, it is also possible to be non-mechanical zoom mirror group, an embodiment
In, can by the frame for movement such as mode such as slide rail, gear or hinge, regulate multiple optical lens it
Between distance, thus realize regulating the effect of the focal length of whole optical frames group；In another embodiment, may be used
Varifocal mirror group is specifically as follows liquid crystal lens, and liquid crystal lens changes refractive index under the effect of electric field, thus logical
Cross the effect changing the focal length that electric field is i.e. capable of change liquid crystal lens, compared with mechanical zoom mirror group, liquid
Brilliant lens have that volume is little, thickness is thin, are easily integrated, image quality preferably and response time advantage faster.
It can be seen that the varifocal mirror group provided by the embodiment of the present invention, it is possible to make myopia user or
Person hypermetropia user when the near-eye display system using the embodiment of the present invention to provide without wearing spectacles again, side
Myopia user or the use of hypermetropia user.
Please continue to refer to Fig. 2, as in figure 2 it is shown, can plane mirror 203 can be instead that plane can instead can be saturating thoroughly
Plane mirror, this plane can the plane at plane mirror place and the horizontal line of sight of human eye be instead 30 degree～60 degree thoroughly
Angle, more preferably, this plane can the plane at plane mirror place and the horizontal line of sight of human eye be instead 45 thoroughly
The angle of degree.
In actual applications, can plane mirror 203 can be instead on plate glass, to plate last layer can instead may be used thoroughly
Permeable membrane and obtain, specifically can be selected by plating on plate glass and have the sulfur of high index of refraction by anti-permeable membrane
Change zinc (chemical formula: ZnS) and there is the material such as Afluon (Asta) (chemical formula: the MgF2) formation of low-refraction
Film layer, specifically, as a example by the zinc sulfide using refractive index to be 2.3 and Afluon (Asta) that refractive index is 1.38,
Can by the coating structure of G | HLHL | A or G | 2LHLHL | A realize can thoroughly can be anti-function, its
In, G is glass baseplate, and H is zinc sulfide, L Afluon (Asta), and 2L represents plating two-layer Afluon (Asta), and A represents empty
Gas, in actual applications, can control transmission light and the ratio of reflection light by the thickness of film layer, such as
Can control to be 1:1 etc. by the ratio of transmission light and reflection light, just repeat no more at this.
In specific implementation process, please continue to refer to Fig. 2, as in figure 2 it is shown, can instead can concave mirror 204 thoroughly
Can be the concave mirror of a rotational symmetric aspheric face type, there is the function of amplification, and plate in person of modern times's eye side
Having the film layer with a certain transmittance, the ratio such as transmission light with reflection light is 3:7, or 1:1 etc., when
So, it is also possible to instead thoroughly can plate such as uvioresistant away from human eye side by concave mirror 204, radioprotective etc. are many
Plant functional membrane layer, do not limit at this.
The scanning ray of scanning light source 201 output, will be by can instead can turbine after focal length mirror group 202
Face mirror 203 reflex to can instead can concave mirror 204 thoroughly, through can instead can thoroughly after concave mirror 204 convergence reflex,
Again through can instead can thoroughly be received by human eye, so, by the amphiblestroid persistence of vision of human eye after plane mirror 203
Phenomenon, scanning ray just can form virtual image in human eye；Meanwhile, external environment light warp successively
Crossing can instead can concave mirror 204 and can instead can thoroughly being received by human eye after plane mirror 203 thoroughly such that it is able at human eye
Middle formation external environment image, so that the virtual image that scanning ray is formed can be superimposed upon external environment
On the external environment image that light is formed such that it is able to provide a user with the experience of augmented reality.
It can be seen that the embodiment of the present invention provide near-eye display system in have employed Traditional optics by
Scanning ray and external environment light are transferred to human eye, due to Traditional optics tool when transmitting image light
The advantage having low dispersion, so ensure that the void that the nearly eye display optical system that the embodiment of the present invention provides provides
Intending the accuracy of image color, the loss rate of the human eye of image light entrance simultaneously is identical, there is not same image
The loss rate of a part of light relatively low and loss rate of another part light is higher and the brightness disproportionation that occurs
Even phenomenon, thus ensure that the uniformity of the brightness of virtual image, it is to avoid because of virtual image color and
Brightness disproportionation and affect the Consumer's Experience of augmented reality equipment.
Embodiment of the present invention second aspect provides a kind of augmented reality equipment, introduces including such as first aspect
Near-eye display system.
Describe concrete structure and the running of near-eye display system in detail,
This just repeats no more.
One or more technical scheme in the embodiment of the present invention, at least has the following technical effect that or excellent
Point:
The near-eye display system that the embodiment of the present invention provides have employed Traditional optics by scanning ray
It is transferred to human eye, owing to Traditional optics has low dispersion when transmitting image light with external environment light
Advantage, so ensure that the virtual image color that the nearly eye display optical system that the embodiment of the present invention provides provides
Color accuracy, the loss rate of the human eye of image light entrance simultaneously is identical, there is not a part for same image
The loss rate of light is relatively low and loss rate of another part light is higher and the phenomenon of brightness irregularities that occurs,
Thus ensure that the uniformity of the brightness of virtual image, it is to avoid because of the color of virtual image and brightness disproportionation and
Affect the Consumer's Experience of augmented reality equipment.
All features disclosed in this specification, or disclosed all methods or during step, except mutually
Beyond the feature repelled mutually and/or step, all can combine by any way.
Any feature disclosed in this specification (including any accessory claim, summary and accompanying drawing), removes
Non-specifically describes, all can be by other equivalences or have the alternative features of similar purpose and replaced.That is, unless
Narration especially, each feature is an example in a series of equivalence or similar characteristics.
The invention is not limited in aforesaid detailed description of the invention.The present invention expand to any in this manual
Disclose new feature or any new combination, and disclose arbitrary new method or the step of process or any
New combination.
Claims (10)
1. a near-eye display system, it is characterised in that including: scanning light source, focal length mirror group, can be anti-
Can plane mirror and can instead can concave mirror thoroughly thoroughly；
The scanning ray of described scanning light source output after described focal length mirror group, by described can instead can turbine face
Mirror reflex to can instead can concave mirror thoroughly, through described can instead can thoroughly after concave mirror convergence reflex, then through described can
Instead can thoroughly be received by human eye after plane mirror；
External environment light sequentially pass through described can instead can thoroughly concave mirror and described can instead can quilt after plane mirror thoroughly
Human eye receives.
2. near-eye display system as claimed in claim 1, it is characterised in that described scanning light source is arranged
Above described focal length mirror group, described can instead can thoroughly be arranged at below described focal length mirror group by plane mirror, and described
Can instead can thoroughly plane mirror described can instead can be thoroughly between concave mirror and human eye.
3. near-eye display system as claimed in claim 1, it is characterised in that described scanning light source includes
Beam providing unit and two-dimensional scan device, described beam providing unit is used for sending collimated ray, and described two
Dimension scanning device, for being scanned in two different directions by described collimated ray, exports described scanning
Light.
4. near-eye display system as claimed in claim 3, it is characterised in that described beam providing unit
Specifically including laser generator and collimator assembly, described laser generator is used for generating laser, described collimation group
Part is for carrying out collimation process by described laser, to export described collimated ray.
5. near-eye display system as claimed in claim 4, it is characterised in that described beam providing unit
Also including optical fiber coupling assembly and optical fiber, described optical fiber coupling assembly is for generating described laser generator
Laser coupled enters described optical fiber, and described optical fiber is by described Laser emission to described collimator assembly.
6. near-eye display system as claimed in claim 5, it is characterised in that the exit end of described optical fiber
It is ground to curved-surface structure.
7. near-eye display system as claimed in claim 3, it is characterised in that described two-dimensional scan device
It is specially DMD, two dimension MEMS galvanometer, double single shaft MEMS galvanometer, EOD or liquid crystal grating.
8. near-eye display system as claimed in claim 1, it is characterised in that described focal length mirror group includes
Focus mirror group or varifocal mirror group.
9. near-eye display system as claimed in claim 8, it is characterised in that described varifocal mirror group has
Body is liquid crystal lens.
10. an augmented reality equipment, it is characterised in that include such as claim institute arbitrary in claim 1-9
The near-eye display system stated.
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| CN201610344148.6A CN105892058A (en) | 2016-05-20 | 2016-05-20 | Near-to-eye display system and augmented reality device |
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| CN107861247A (en) * | 2017-12-22 | 2018-03-30 | 联想(北京)有限公司 | Optical component and augmented reality equipment |
| CN107884934A (en) * | 2017-11-10 | 2018-04-06 | 联想(北京)有限公司 | Head-mounted display apparatus and its control method |
| CN109791284A (en) * | 2016-10-04 | 2019-05-21 | 麦克赛尔株式会社 | Projection optical system and head-up display device |
| CN109901291A (en) * | 2017-12-07 | 2019-06-18 | 北京铅笔视界科技有限公司 | Glasses and its nearly eye display module |
| WO2019154430A1 (en) * | 2018-02-12 | 2019-08-15 | 杭州太若科技有限公司 | Wearable ar system, ar display device, and projection source module thereof |
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